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8 Commits

Author SHA1 Message Date
Eric Christopher 6ad8167714 Remove the pmulld intrinsic and autoupdate it as a vector multiply. 
Rewrite the pmulld patterns, and make sure that they fold in loads of
arguments into the instruction.

llvm-svn: 99910
 2010-03-30 18:49:01 +00:00
Dan Gohman 40503396da Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Dan Gohman 6571ef3577 Don't use special heuristics for nodes with no data predecessors 
unless they actually have data successors, and likewise for nodes
with no data successors unless they actually have data precessors.

llvm-svn: 64327
 2009-02-11 21:29:39 +00:00
Evan Cheng abda665f5f Teach 2addr pass to be do more commuting. If both uses of a two-address instruction are killed, but the first operand has a use before and after the def, commute if the second operand does not suffer from the same issue. 
%reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1                                                                                                                                     
%reg1029<def> = MOV8rr %reg1028                                                                                                                                                      
%reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead>                                                                                                                            
insert => %reg1030<def> = MOV8rr %reg1028                                                                                                                                            
%reg1030<def> = ADD8rr %reg1028<kill>, %reg1029<kill>, %EFLAGS<imp-def,dead>                                                                                                         

In this case, it might not be possible to coalesce the second MOV8rr                                                                                                                 
instruction if the first one is coalesced. So it would be profitable to                                                                                                              
commute it:                                                                                                                                                                          
%reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1                                                                                                                                     
%reg1029<def> = MOV8rr %reg1028                                                                                                                                                      
%reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead>                                                                                                                            
insert => %reg1030<def> = MOV8rr %reg1029                                                                                                                                            
%reg1030<def> = ADD8rr %reg1029<kill>, %reg1028<kill>, %EFLAGS<imp-def,dead>

llvm-svn: 62954
 2009-01-25 03:53:59 +00:00
Mon P Wang 308a1acaaf Fix test to account for generating some vector code for mul v2i64 instead 
of incorrectly generating pmuldq

llvm-svn: 61228
 2008-12-18 23:42:37 +00:00
Dan Gohman 923a375053 Make this test independent of the target-triple; the stack alignment 
is specifically what this test depends on.

llvm-svn: 51599
 2008-05-27 17:44:23 +00:00
Nick Lewycky 213e114a2c The Linux ABI emits an extra "movl %esp, %ebp" in function prologue and 
sometimes a "mov %ebp, %esp" in the epilogue.

Force these tests that rely on counting 'mov' to use i686-apple-darwin8.8.0
where they were written.

llvm-svn: 51568
 2008-05-26 20:18:56 +00:00
Dan Gohman 3388d022ac Use PMULDQ for v2i64 multiplies when SSE4.1 is available. And add 
load-folding table entries for PMULDQ and PMULLD.

llvm-svn: 51489
 2008-05-23 17:49:40 +00:00